Flour-bolting machine.



PATENTED AUG. 27, 1907.

M. 0. a; 1. 0. LANDB'S. FLOUR BOLTING MACHINE.

APPLICATION FILED OUT-8, 1901- 2 SHEETS-SHEET 1- M61 115 full 5 0mm JW Ic. rm: uanms PITIRS cm, 'vnsumumu, n

No 864,174. PATENTED AUG. 27, 1907. M. c. M. c. LANDES;

FLOUR BOLTING MAGHINE. AHLIUATION nun 00m. 1001.

2 SHEETS-$3331 2.

w? ?2% W2 5i UNITED SlATES PATENT ()FFIGE MILTON G. LANDES AND ISAIAH G.LANDES, OF YERKES, PENNSYLVANIA.

FLOUR-BOLTING MACHINE.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed O b r 8,1901. Serial No. 77,937-

To all 'whom it may concern:

Be it known that we, MILTON C. LANDES and ISAIAH O. LANDES, both ofYerkes, Montgomery county, Pennsylvania, have invented an Improvement inFlour- Bolting Machines, of which the following is a specification.

Our invention has reference to chines, and consists of certainimprovements all of which are fully set forth in the followingspecification and shown in the accompanying drawings which form a partthereof;

The object of our invention is to provide a construe tion of boltingmachine in which the sieves may be removed or inserted while the machineis in motion and such changes be made without specking the flour fromadmixture of tailings or unbolted particles with the flour. I

Our object is also to provide a form of sieve which is cheap toconstruct, durable in operation, self cleansing and flexibly supportedwhereby it may prevent leakage and have capacity of slight vibrationunder the action of a knocker to shake itself clear of any adheringflour.

Our object is further to form the machine in a compact or condensed formand so supported that the sieve box is balanced with freedom of motionhorizontally in all directions.

Other objects of our invention will be noted when considering thedetails of construction, and these will be better understood byreference to the drawings, in

which:

Figure 1 is a sectional elevation of'a bolting machine embodying ourimprovements on line l-1 of Fig. 12; Fig. 2 is a plan view of same; Fig.3 is a cross section of the sieve box on line 8-3 of Fig. 1; Fig. 4 is across section through two of the sieves and a portion of the box on line4-4 of Fig. 1; Fig. 5 is a longitudinal section on line 5-5 of Fig. 4through one of the sieves; Fig. 6 is a plan view of one of the sieves;and Fig. 7'is an elevation of one of the flexible hangers for the sievebox.

A is the main frame and is preferably made open and strong.

B is the sieve box and is rectangular in plan and is dividedlongitudinally formed by a central compartment by the two interior wallsB The central compartment at the center of the box is divided by crossdivisions to form a central chamber 1) and said chamber is open at topand bottom, This central chamber b has for its object the forming of aspace vertically through the box for the passage of the operating shaftD. The two outer or side compartments W contain the sieves F, of whichthere may be any number desired.

The box B is suspended within the frame A by four rods G, the lower endsof which connect with metal flour bolting macorners of the box, and alsoconnect at the top with extensions from the top of the frame A at itscorners. Rubber cushions C may be employed between the top nuts of theserods 0 and the top extensions as shown in Fig. 7. It is also evidentthat bottom springs C may be interposed between the lower end or headsof the rods and the flanges of the box. This gives great flexibility andpermits the box to swing in all horizontal directions and be yieldinglysupported. The springs G and 0 while acting to sustain the sieve boxwith elasticity also enables the heads of the rods 0 and the top nuts toproperly seat themselves when the rods C vare swungat an incline duringthe vibrations of the box.

The sieve box is given a gyrating motion by the following devices :Ashaft D extends vertically through the central chamber 1) of the box Band is journaled at d d in the cross bars of the frame A. It is possiblewith eccentrics D D which act upon plates B B secured at top and bottomof the box and at the ends of the chamber b. In this way the rotation ofthe shaft D will cause the box B to swing horizontally with a gyratingmotion. The shaft D may be rotated by a band wheel 0 and isprovided withbalance wheels E E to impart steadiness to its motion. The nuts 0 of therods 0 may be screwed to a greater or less extent upon the rods and thuselevate or lower the box B relatively to the eccentrics on the shaft D,and by which adjustment the said eccentrics can be insured working uponthe bearings B on the box.

The sieves F consist of rectangular frames H having light cross bracingbars of wood of slightly less height than the screen frames H. Theframes H are covered on the top with the bolting cloth or screen I andon the bottom with the paper or smooth textile material floor l whichhas a discharge opening 11 at one end, namely the lowest end when inuse. Secured about the'perimeter of this sieve frame H is a strip offelt .T, preferably thicker at the top than at flanges c at the bottomthe bottom for the purpose of enabling the sieve to let *5. Located inone or more of the squares formed by the cross bracing is located aknocker K consisting of a rectangular block of wood or other lightmaterial and supported upon two wires k, 70. Pieces of leather k at theends of the wires act asbuffers and against these the knocker blockstrikes while reciprocating upon the supporting wires. The vibratorymotion given to the box B carrying the sieves insures the motionnecessary to cause the knockers K to continually jar the sieve frame andclear it of adhering flour.

The sieve constructed as above described is simple, cheap to construct,durable, light, eflieient and not liableto get out of order. It combineswith the sieve or screen element, the collecting floor which hasheretofore been made separate and fixed; and is of such shape that it iseasily handled and capable of insertion in or removal from the machinewhen in motion. These sieves F are supported upon oblique side strips fupon the side walls of the chamber W and at the ends they are heldlongitudinally by cross bars M and supported by flanges secured to saidcross bars and consisting of plates at. The sides of the box B isprovided with a series of openings arranged a little above each sieveand of the same or a little greater length so as to permit easy removalof the sieves when necessary. As shown these openings L are larger atone end than the other and are closed by removable doors Z. This allowsthe greatest possible opening into the interior of the box. The bottomof the openings L are somewhat above the tops of the sieves to form awall to properly hold and guide the flour and prevent its spillingthrough the apertures L.

The material to be bolted is received by a chute 0 from the stones orrollers and is delivered to the bolting machine by flexible tube 0 andtube 0 opening through the top of the box B at one end. This material isreceived upon a board N from which it passes upon the upper or tailingsieve F. When it has been treated by this sieve the tailings pass on tothe inclined floor P and are guided transversely to the chute p anddischarged, and the middlings separated by the sieve are guided by theoblique floor I to the lower end and discharged upon a second sieve Fand by gravity and the shaking of the machine works their way to thelower end. The flour collected by the floor of this sieve is dischargedinto a tube R leading through the end wall of the box B and dischargedinto a vertical flour tube S from which it may be delivered in any ofthe well known ways. The unbolted middlings pass over the end of thesieve and fall upon the board N as in the case of the first mentionedsieve and from this it passes on to the next sieve F. From the dischargeend of this sieve the flour passes by a tube B into the vertical flourtube S upon the opposite end of the box B to that provided with theother flour tube S, and the middlings pass down to the next sieve F. Ifthis is the last sieve of the series, the flour is passed by a tube Einto the flour tube S and the tailings are passed upon a tail-board Pand fed laterally into the discharge chute p.

While we have shown four sieves, namely one tailing sieve and threemiddlings sieves, we do not confine ourselves to any number as more orless may be employed as desired. We have also described the constructionof the sieves in the chamber W upon one side .of the box B and it is tobe understood that there is a similar construction upon the other sideof box B. In fact it is evident that, if it is desired to give greatcapacity to a machine having a single driving mechanism, these sets ofsieves may be duplicated still further within the same box B. The flourmay be sampled as 'and having a discharge opening,

it leaves each sieve and enters the tubes S, S, ply removing the coversT of the handholes tubes.

While we prefer the construction as shown the minor details thereof maybe modified without departing from the spirit of the invention.

Having now described our invention, what we claim as new and desire tosecure by Letters Patent, is:

1. In a bolting machine, a rectangular sieve box containing two seriesof sieves separated by a central aperture through the box, and alsovertical discharge chutes between them which chutes are also outside ofthe central aperture, suspension devices for flexibly suspending the hma straight shaft extending through the central opening, and eccentricson the shaft for vibrating the sieve box about the shaft.

2. A sieve box of a bolting machine, combined with a series of removablebolting sieves arranged one above the other and wholly inclosed withinthe box and the adjacent sieves having opposite obliquity and each ofsaid sieves having formed fixedly therewith a lower flour collectingfloor of the same obliquity as the sieve having a discharge opening atone end, independent covered openings through the side of the sieve boximmediately above and to the side of each sieve for removing the sieves,soft packing around the sieves below the independent covered openings,means to supply the flour to the sieve box, and chutes to remove theflour extending below the floors of the sieves.

3. In a bolting machine, the combination of a sieve box having a seriesof sieve supporting flanges within it, power devices for vibrating ithorizontally in all directions, a series of removable sieve framesarranged within the box and supported one above the other upon thesupporting flanges, a soft packing arranged between the outer verticaledges of the sieve frames and the sieve box whereby they are flexiblysupported in a lateral direction, and a knocker carried upon each sievefor imparting to it an independent vibration.

4. In a bolting machine, the combination of a sieve box having a seriesof sieve supporting flanges within it, power devices for vibrating ithorizontally in all directions, a series of removable sieve framesarranged within the box and supported one above the other upon thesupporting flanges and each having a flour collecting floor arrangedbelow the sieve, a felt packing arranged between the outer verticaledges of the sieve frames and the sieve box Whereby they are flexiblysupported in a lateral direction, and a knocker carried upon each sievefor imparting to it an independent vibration.

5. A sieve for a bolting machine consisting of the combination of theouter frame provided with cross bracing of less height than the width ofthe outer frame, a sieve or screen stretched over the top of the frameand above the cross bracing, and a smooth flour collecting floor orbottom of paper stretched over the bottom of the frame at a dis tancebelow thecross bracing and having a discharge opening, and a knockercarried upon the framing of the cross sieve structure between the screenand floor to jar it during its shifting movements.

6. A sieve for a bolting machine, the combination of a sieve box, with asieve consisting of the outer frame, a sieve or screen stretched overthe top of the frame, and a smooth flour collecting floor or bottom of asmooth, vibratable material stretched over the bottom of the frame and asurrounding felt packing upon the perimeter of the outer frame fittingagainst the sieve box to make a flour tight joint.

7. A sieve for a bolting machine consisting of a main frame, a sieve orscreen stretched over the frame, and a bounding packing of felt aboutthe main frame and of greater thickness at the top than at the bottom,in combination with a knocker carried by the main frame and adapted tovibrate it, and a sieve box or case adapted to receive the sieve andcoact with the felt to make a tight but yielding joint whereby theknocker may vibrate the sieve within the box.

8. In a bolting machine, the combination of the sieve by simin said boxB having the end flour tubes S, S and side tailing chutes p, 19, meansto vibrate the sieve box, a series of sieves F having screens I andflour collecting floors I, flexible packing .1 between the sieves andbox, floors P and P for guiding the tailings from the first and lastsieves of the series into the chutes p and 12', floors N for receivingthe middlings from one sieve and delivering it to the next, and tubes Itfor receiving the flour from the collect ing floors of the sieves anddelivering it to the flour tubes S, S,

9. In a bolting machine, the combination of the sieve box B having theend flour tubes S, S

chutes p, p, means to vibrate the sieve box, a series of vsieves 1*having screens I and flour collecting floors I,

flexible packing .T between the sieves and box, removable and sidetailing doors I in the side of the sieve box slightly above the level ofeach sieve, knockers carried by each sieve for vibrating it, floors Iand I for guiding the tailings from the first and last sieves of theseries into the chutes 1) and p, floors N for receiving the middlingsfrom one sieve and delivering it to the next, and tubes It for receivingthe flour from the collecting floors of the sieves and delivering it tothe flour tubes S, S.

In testimony of which invention, we have hereunto set our hands. l

MILTON C. LANDES. ISAIAH C. LANDES.

Witnesses:

ISAIAH C. REIFF, IRVIN H. Dm'rwimm.

